Previously titled Unknown White Mail, Unknown centers on a doctor (Liam Neeson) who, while visiting Berlin with his wife (January Jones), is in a car accident that leaves him in a coma. He awakens to discover that his wife suddenly doesn't recognize him and another man has assumed his identity. Ignored by disbelieving authorities and hunted by mysterious assassins, he finds himself alone, tired and on the run. Aided by an unlikely ally, Martin plunges headlong into a deadly mystery that will force him to question his sanity, his identity, and just how far he's willing to go to uncover the truth.